How to reformat “gq”ed text in one line per paragraph format in Vim

Question

I have some text files previously formatted in vim using \"gggqG\". Now I need to convert them to one line per paragraph format. I saw a way(using :g command) to do that before,

Answer 1

If your text paragraphs are separated by a blank line, this seems to work:

:g!/^\s*$/normal vipJ

:g global (multi-repeat)

!/^\s*$/ match all lines except blank lines and those containing only whitespace.

normal enters 'normal' mode

vip visually select inner paragraph

J join lines